Hod elevatoe



2 Sheets-Sheet 1. F. W. KEYS.

HOD ELEVATOR.

(No Model.)

No. 333,134. Patented Dec. 29

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(No Model.) 2 Sheets-Sheet 2. P. W. KEYS.

HOD ELEVATOR} No. 333,134. Pt en'ted Dec. 29, 1885.

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UNITED STATES PATENT OFFICE.

FRANK W. KEYS, OF NEWVYORK, N. Y., ASSIGNOR OF ONE-HALF TO DANIEL DULL, OF SAME PLACE.

HOD-ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 333,134, dated December 29, 1885.

Application filed June 6, 1885. Serial No. 167,838. (No model.)

To all whom it may concern:

Be it known that I, FRANK W. KEYs, a resident of New York city, in the county and State ofNew York, haveinvented an Improved Hod-Elevator, of which the following is a full, clear, and exact description, reference being made to the accompanying drawings, in which- Figure 1 is a side view of myimproved hodelevator. Fig. 2 is an enlarged side view, partly in section, of the chain and so much of the bed as connects with the chain. Fig. 3 is an end view of the hod. Fig. 4 is an inner face view of one of the bearings of the drivingshaft in the elevator. Fig. 5 is a side View of said bearing, showing the drivingshaft in section. Fig. 6 is a top view of said bearing, showing the post that carries it in section. Fig. 7 is a face view of the elevator, its lower part being shown in section. Fig. 8 is an enlarged side view of one of the upper bearings. Fig. 9is an enlarged face view of the same. Fig. 10 is an enlarged top view of the same. Fig. 11 is a side view of one of the wheels around which the elevating-chain passes, and Fig. 12 a cross-section thereof.

This invention relates to a new apparatus for elevating hods; and it consists in instrumentalities for keeping the bearings of the several shafts that are used in the hod-eleva tor properly self-adjusting, and in instrumentalities for properly connecting the elevator with a hod, all as hereinafter more fully described.

In the drawings, the letter A represents the lower frame, and the letter B the upper frame, of the bod-elevator. The lower frame is to be put on the ground or in a cellar, while the upper frame is to be placed on an upper floor, or at such an altitude as may be necessary for the purpose for which the instrument is intended to be used. These two frames are connected by a pair of chains, 0 O, which run over chainwheels D D and E E, that are respectively hung in the frames Aand B. The chainsG O are parallel and are constructed of j ointed links, some of which links (the drawings show every third link) have outwardly -projecting hooks a a formed thereon. The two chains 0 O are at proper intervals connected by transverse rungs b b. The rungs are the same distances The wheels E are provided with projecting teeth d d, (see Figs. 11 and 12,) which teeth are set in grooved or slotted portions of the wheels, and secured in position thereon by screws in such manner that they may be adjusted and readily replaced on the wheel, if broken.

The lower set of wheels D D in the frameA is mounted upon a shaft, F, which has its bearings in boxes 6 e. oted at f in a block, which is carried by an uprightscrew, G. Thelower end of this screw sets in asocket, h, while the upper part of the screw is swiveled in a rigid crossbar, t, of the frame A. By turning each screw the block 9 pertaining to it may be raised or lowered at will, and thus theheight and level of the shaft can be readily adjusted. The upper set of wheels,E E,is mounted upon a shaft, H,which is hung in bearings I I. These bearings are shown in the enlarged views, Figs. 8, 9, and 10. Each of the bearings I is pivoted by a horizontal pivot, j, in the uprights of the frame B. Thus it will be seen that the two shaftsF and H of the chain 0 are both hung in pivoted bearings, so that as the chain is revolved any strain which, by the loaded hods, may be exerted upon such chain, and which may tend to draw it out of the vertical direction, may be absorbed by these pivoted bearings. The frame B also carries the driving-shaft J, which carries a sprocket or chain wheel, and connects by a chain or belt, Z, with another chain wheel or pulley, m, that is mounted upon the apart from one another as are the hooks a a.

Each of these boxes is pivshaft H. The driving-shaft J has a crankhandle, n, or other contrivance for turning it, and should also carry a ratchet-wheel, 0,which engages with a click, 1), to preventthe load from running back. The shaft J is also hung in pivoted bearings q q, that are more fully shown in Figs. 4, 5, and 6that is to say, said bearings have upper and lower trunnions, r 1', that enter the slotted heads of screws 8 s, which are secured in the uprights of the frame B. In these slotted heads the trunnions r r of the pivoted bearings q are self-adjusting, so that any inequality of strain on the whole mechanism will be absorbed by these adjustable bearings.

The liod itself is shown at L in the drawings, and is provided with a shank, t, of the usual kind. At that end of the hod which is to come nearest the chains 0 0 its inclined sides are embraced by metallic straps a u, which are connected bya cross-bar, '0. This cross-bar is to be placed over a pair of hooks, a' a, ofthe chains 0, while the lower part of the shank it bears against one of the rungs b, as is clearly shown in Fig. 1 of the drawings.

The operation of the mechanism will be readily understood from the foregoing specification. Each hod L, when loaded, is, by its cross-bar 1;, put on a set of hooks. a, and the hod is then let go, so that the shank twill bear against the outer side of one of the rungs b. When the crank-handle n is taken hold of to turn the shalt J, the shaft H will be revolved and the hods on the chains thereby raised to the desired height. Whenever the distance between the shafts F and H is to be varied, which may frequently happen, as the instrument is to be used in different buildings, the chains 0 O are readily elongated or shortened by adding to or removing therefrom the proper number of links. Any remaining adjustment as to the lenglh of the chains may be obtained by turning the screws G G.

As the apparatus is to be exposed to rough usage, the adjustability of the bearings of the The l several shafts becomes very important. bearings I prefer to provide with hinged caps x, as shown. The straps u and bar 0 also serve to brace and strengthen the hod.

I claim 1. In a hod'elevator, the combination of the frame A, pivoted bearings e e, shaft F, and

chain G,with the frame 13, pivoted bearings I I, and shaft H, substantially as herein shown and described.

2. The combination of the frame A, having cross-bars t i, with the screws G G, blocks 9 g, pivoted bearingse e, and shaft F, substantially as and for the purpose specified.

3. The frame B, combined with the screws 8 s, which have laterally-slotted heads, and with the pivoted bearings q, having trunnions r r, substantially as described.

4. The combination of the frame A with the pivoted bearings e e, hung therein, shaft F, chain 0, shaft H, wheels E and m, pivoted bearings I I, frame B, chain l, shaft J, chainwheel thereon, and pivoted bearings q, substantially as described.

5. The combination of the hod L, having shank t and cross-bar 1), said cross-bar being in front of and at a distance from said hod, with the chains GO, having hooks a and rungs b, all arranged to suspend the hod from the hooks a by the cross-bar 12, substantially as described.

6. The combination of the hod L. having shank t, straps u, and cross-bar c. which crossbar is at a distance from said hod, with the chains 0 0, having books a and rungs b. all "arranged to suspend the hod from the hooksa by the cross-bar 12, substantially as described.

FRANK W. KEYS.

Witnesses:

HARRY M. TURK. CHARLES G. M. THOMAS. 

